The voltage-induced actuation of a weak polyelectrolyte brush is an example of an ultrathin, remotely controlled responsive surface coating. We propose a continuation of experiment RB910277 to go on with the study of the voltage-induced swelling and collapse of poly(2-(dimethylamino)ethyl methacrylate) weak polybase brushes. We plan to use a silicon liquid cell and an increased silicon wafer size to decrease the measurement background and increase the useful neutron flux, in order to measure the structure of the brushes on a timescale of 30 seconds to 1 minute, as they respond to applied voltages. We request a small modification of an INTER motion controller to provide a fully automated, bipolar voltage supply.